Power converter, motor driver, and refrigeration cycle applied equipment

Abstract

A power converter includes a converter, a smoothing capacitor, an inverter, and a controller. The converter rectifies a power supply voltage applied from an alternating-current power supply. The smoothing capacitor smooths a rectified voltage output from the converter into a direct-current voltage including a ripple. The inverter converts the direct-current voltage smoothed by the smoothing capacitor into an alternating-current voltage to be applied to a motor. The controller performs control such that a first physical quantity representing an operation state of the converter is equal to a second physical quantity representing an operation state of the inverter.

1 - 10 . (canceled) 
     
     
         11 . A power converter comprising:
 a converter adapted to rectify a power supply voltage applied from an alternating-current power supply;   a smoothing capacitor adapted to smooth a rectified voltage output from the converter into a direct-current voltage containing a ripple;   an inverter adapted to convert the direct-current voltage smoothed by the smoothing capacitor into an alternating-current voltage to be applied to a motor; and   a controller adapted to control such that a first physical quantity is equal to a second physical quantity, the first physical quantity representing an operation state of the converter and the second physical quantity representing an operation state of the inverter, wherein   the controller is adapted to control the inverter such that the second physical quantity is equal to the first physical quantity.   
     
     
         12 . A power converter comprising:
 a converter adapted to rectify a power supply voltage applied from an alternating-current power supply;   a smoothing capacitor adapted to smooth a rectified voltage output from the converter into a direct-current voltage containing a ripple;   an inverter adapted to convert the direct-current voltage smoothed by the smoothing capacitor into an alternating-current voltage to be applied to a motor; and   a controller adapted to control such that a first physical quantity is equal to a second physical quantity, the first physical quantity representing an operation state of the converter and the second physical quantity representing an operation state of the inverter, wherein   the controller is adapted to control the inverter such that the second physical quantity is equal to the first physical quantity, wherein   the controller is adapted to detect the second physical quantity in accordance with timing of conduction or nonconduction of a semiconductor switching element included in the inverter.   
     
     
         13 . A power converter comprising:
 a converter adapted to rectify a power supply voltage applied from an alternating-current power supply;   a smoothing capacitor adapted to smooth a rectified voltage output from the converter into a direct-current voltage containing a ripple;   an inverter adapted to convert the direct-current voltage smoothed by the smoothing capacitor into an alternating-current voltage to be applied to a motor;   a controller adapted to control such that a first physical quantity is equal to a second physical quantity, the first physical quantity representing an operation state of the converter and the second physical quantity representing an operation state of the inverter; and   a filter circuit adapted to perform filter processing on the first physical quantity and the second physical quantity, wherein   the controller is adapted to control at least one of the converter or the inverter on a basis of outputs of the filter circuit.   
     
     
         14 . A power converter comprising:
 a converter adapted to rectify a power supply voltage applied from an alternating-current power supply;   a smoothing capacitor adapted to smooth a rectified voltage output from the converter into a direct-current voltage containing a ripple;   an inverter adapted to convert the direct-current voltage smoothed by the smoothing capacitor into an alternating-current voltage to be applied to a motor; and   a controller adapted to control such that a first physical quantity is equal to a second physical quantity, the first physical quantity representing an operation state of the converter and the second physical quantity representing an operation state of the inverter, wherein the controller is adapted to:
 perform filter processing on a detection value of the first physical quantity and a detection value of the second physical quantity; and 
 control at least one of the converter or the inverter on a basis of outputs reflecting the filter processing. 
   
     
     
         15 . The power converter according to  claim 11 , wherein
 the controller is adapted to control the converter such that the first physical quantity is equal to the second physical quantity.   
     
     
         16 . The power converter according to  claim 12 , wherein
 the controller is adapted to control the converter such that the first physical quantity is equal to the second physical quantity.   
     
     
         17 . The power converter according to  claim 13 , wherein
 the controller is adapted to control the converter such that the first physical quantity is equal to the second physical quantity.   
     
     
         18 . The power converter according to  claim 14 , wherein
 the controller is adapted to control the converter such that the first physical quantity is equal to the second physical quantity.   
     
     
         19 . The power converter according to  claim 11 , wherein
 the converter includes at least one semiconductor switching element.   
     
     
         20 . The power converter according to  claim 12 , wherein
 the converter includes at least one semiconductor switching element.   
     
     
         21 . The power converter according to  claim 13 , wherein
 the converter includes at least one semiconductor switching element.   
     
     
         22 . The power converter according to  claim 14 , wherein
 the converter includes at least one semiconductor switching element.   
     
     
         23 . The power converter according to  claim 19 , wherein
 the controller is adapted to detect the first physical quantity in accordance with timing of conduction or nonconduction of the semiconductor switching element included in the converter.   
     
     
         24 . The power converter according to  claim 20 , wherein
 the controller is adapted to detect the first physical quantity in accordance with timing of conduction or nonconduction of the semiconductor switching element included in the converter.   
     
     
         25 . The power converter according to  claim 21 , wherein
 the controller is adapted to detect the first physical quantity in accordance with timing of conduction or nonconduction of the semiconductor switching element included in the converter.   
     
     
         26 . The power converter according to  claim 22 , wherein
 the controller is adapted to detect the first physical quantity in accordance with timing of conduction or nonconduction of the semiconductor switching element included in the converter.   
     
     
         27 . A motor driver comprising the power converter according to  claim 11 . 
     
     
         28 . A motor driver comprising the power converter according to  claim 12 . 
     
     
         29 . A motor driver comprising the power converter according to  claim 13 . 
     
     
         30 . A motor driver comprising the power converter according to  claim 14 . 
     
     
         31 . A refrigeration cycle applied equipment comprising the power converter according to  claim 11 . 
     
     
         32 . A refrigeration cycle applied equipment comprising the power converter according to  claim 12 . 
     
     
         33 . A refrigeration cycle applied equipment comprising the power converter according to  claim 13 . 
     
     
         34 . A refrigeration cycle applied equipment comprising the power converter according to  claim 14 .